Add the rest of the 'cheese' sauce ingredients into a food processor and once the veggies are tender, drained, and slightly cool, add those to the food processor and blend with the other sauce ingredients.
Cook the elbow pasta til tender, then drain.
Add the 'cheese' sauce to the pasta and stir well.
Let cool slightly and enjoy!
Notes
*Feel free to use more or less breadcrumbs as you prefer.If you don't want to bake the mac and 'cheese', or only want to bake half of it and eat the other half without baking; feel free to do so.